#pragma once

#include <iostream>
#include <string>
#include <unistd.h>
#include <cstring>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include "Log.hpp"

Log lg;

enum
{
    SocketErr = 2,
    BindErr,
    ListenErr,
};

// TODO
const int backlog = 10;


class Sock
{
public:
    Sock()
    {}
    ~Sock()
    {}

    //创建套接字
    void Socket()
    {
        sockfd_ = socket(AF_INET,SOCK_STREAM,0);
        if(sockfd_<0)
        {
            lg(Fatal, "socker error, %s: %d", strerror(errno), errno);
            exit(SocketErr);
        }
    }


    //绑定信息
    void Bind(uint16_t port)
    {
        struct sockaddr_in local;
        memset(&local,0,sizeof(local));
        local.sin_port =htons(port);
        local.sin_family = AF_INET;
        local.sin_addr.s_addr = INADDR_ANY;
        if(bind(sockfd_,(struct sockaddr*)&local,sizeof(local))<0)
        {
            lg(Fatal, "bind error, %s: %d", strerror(errno), errno);
            exit(BindErr);
        }
    }

    void Listen()
    {
        if(listen(sockfd_,backlog)<0)
        {
            lg(Fatal, "listen error, %s: %d", strerror(errno), errno);
            exit(ListenErr);
        }
    }

    int Accept(std::string *clientip,uint16_t *clientport)
    {
        struct sockaddr_in peer;
        memset(&peer,0,sizeof(peer));
        socklen_t len = sizeof(peer);
        int newfd = accept(sockfd_,(struct sockaddr*)&peer,&len);
        if(newfd < 0)
        {
            lg(Warning, "accept error, %s: %d", strerror(errno), errno);
            return -1;
        }

        // 将 IP 地址从网络字节序转换为点分十进制字符串
        char ipstr[64];
        inet_ntop(AF_INET,&peer.sin_addr,ipstr,sizeof(ipstr));
        // 将转换后的 IP 地址赋给外部传入的 clientip
        *clientip = std::string(ipstr);  

        // 将端口号从网络字节序转换为主机字节序并传递
        *clientport = ntohs(peer.sin_port);
        return newfd;
    }
    
    bool Connect(const std::string &ip,const uint16_t &port)
    {
        struct sockaddr_in peer;
        memset(&peer,0,sizeof(peer));
        peer.sin_family = AF_INET;
        peer.sin_port = htons(port);
        inet_pton(AF_INET,ip.c_str(),&(peer.sin_addr));

        if(connect(sockfd_,(struct sockaddr*)&peer,sizeof(peer))==-1)
        {
            std::cerr << "connect to " << ip << ":" << port << " error" << std::endl;
            return false;
        }
        return true;
    }

    void Close()
    {
        close(sockfd_);
    }
    int Fd()
    {
        return sockfd_;
    }

private:
    int sockfd_;
};
